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atten tutes atnt @fitta IMPROVEMENT IN MACHINES EOE MAKING NUTS.`

dige dgphulsreftmh tu in tlgesc httets ntcnt mit making mi nf tti: sas-c.

TO ALL WHOM IT MAY CONCERN:

Be it known that I, GEORGE DUNHAM, of Unionville, county of Hartford, and State of Connecticut, have invented certain new and useful Improvement in Nut Machines; and I do hereby declare that the same is described and represented in the following specication and drawings; and to enable others skilled in the art to make and use the same, I will proceed to describe its construction and operation by referring t0 the drawings, in which the same letters indicate like parts in each of the figures.

The nature of this improvement will be understood from the specifications and drawings. The object desired to be attained thereby is to improve upon my former patent dated June 27, 1.865, No. 48,383.

i The bed-plate, its support, and the posts, Zic., to which the mechanism is arranged 0r secured, together with the driving-shafts and gears, are constructed and arranged substantially as in the original. In the accompanying drawings y Figure 1 is a front elevation.

Figure 2 is a lefthand side elevation.

Figure 3 is a. right-hand sideelevation Figure 4 is a back side elevation.

Figure 5 is a plan or top view of th'e bed-plate.

A is the bed-plate. B are the legs or the foundation upon which the machine is supported. C are the posts or hangers to or upon which the mechanism is arranged or secured. C is a stock, which, when the machine is ready for operation, is secured firmly upon and near the centre of the bed-plate A, but, in the drawings, as detached and elevated a short distance above said plate in order to show all the parts more clearly. D are the driving-shafts. E is the pulley or crank by which the power is transmitted through the gears F to give motion to'the entire machine. II are cams, (each of which is separately designated by gs. l, 2, 3, &c.,) and are arranged upon the shafts D. I are levers, tive in number, arranged in the upper end of 'the stock C. These ievers are actuated by cams arranged in the cylinder directlyrnnder their hack ends to depress the bars or shafts or sliding-die stock L directly under their front ends. These levers and shafts, or sliding-stocks, after having been depressed, are reacted by springs, or their equivalents, which are arranged under the front ends of said levers. J is an anvil-blocle K are swage-hammers, three of which work in a plane parallel with the surface of the bed A, two of which work in a line in front of and parallel with the face ot' the anvil-block J, and work together from opposite directions, and strike the nut at the same time, or nearly so, thereby avoiding the necessity of an additional anvil-block. The third works in a line at right angles with the face of the anvil-block, and strikes the nut at the same time or alternately with the other hammers. Upon the lower end of the shaft or sliding stock Ll is formed or secured the cutter for clipping the nut-blank from the bar, which nut-bar is held and the blank cut therefrom in the usual may. When the blank is cut from the bar the push-barM moves it along under the cone-shaped recess or former N, formed or secured on to the lower end of the shaft or sliding stock L2, when bythe action of the lever I2 it descends and forms or gives the proper shape to the upper side of the nut-blank; then by a continuous motion of the push-bar M the blank is moved forward directly in front of the punch-die O and anvil-block l; then by the action of the hammer or push-bar K the blank is moved hack over the punch-die plate and against the anvil-block, and at the same time it is held between the pressers or holders I), one formed or secured on the lower end of the shaft or sliding stock L3, and the other arranged to Work up through the punch-die or bed-plate by means of the lever 2 on the under side of the machine. The object ofv this holder, which works up through the punch-die, is to aid in holding the blank during the hammering operation. The blank while being held between the holders is simultaneously, or nearly so, pressed or hammered by the hammers K K K, then the punch X secured on the shaftor sliding stock L4, descends and punches the hole in the blank, then the lifter Q, which works up through the bed, by the action of the lever 3 'on the under side of the machine, lifts the pusher or hammer K up so that it will clear the punch-die as it moves to carry the nut from the punch-die forward directly in front of the hammer K, formed or secured on the shaft or sliding-stock L7. The nut-blank is then carried back by the action of the push-bar S directly under the hammer L, over the clearer-punch R, which is operated up through lthe bed-plate by means of the lever 1 on the under side ol' the machine; the object of which isto clear the bur from `the uut and leave the hole in the nut (miei 2 uniform in shape and size on both sides, and consequently render it more merchantablc and desirable for use. After the puneh R has been withdrawn from the nut, the nut is then moved just bach of therpuneh-die by the pusher S, then the hammer er press-bar K descends upon the nut to remove any remaining nnerencss upon the upper 'or under side'which gives the finish to the nut. The hammers or pressers K K K serve as gauges to hold the nut in place while being punched. The levers T, l, 2, with their connection, are arranged on the under side of' the machine, and are operated upon alternately by their respective cams arranged upon the shafts D. Theever 2, arranged at the left-hand side of the machine, is raised or depressed by means of adjusting screws a b, the object of' which is to adjust the pusher M so as to move the blank to its desired position under the tools according to the various sizes .of nuts. H U is a yielding cam, the object of which is to adjust the action of the hammer or presser I so as not to injure the hammers K K or other mechanism while holding the nut.

I believe I have thus shown the nature, construction, and operation of this improvement so as to enable others skilled to make and use the same therefrom.

What I claim, therefore, and'desire to secure by Letters'Patent, i`s

1. Arranging the cams land hammers K and K, so that the latter shall act in the double capacity to hammer the blank and to push it to the punch O, and from thence i`n front of the pusher S, substantially :1s described. i I

2. I claim constructing` and arranging the cams and the hammers K K KH, so that the latter shall not in the double capacity to hammer the blank and hohl it until the punch X has entered the same, substantially in the manner described. i v

3. I claim the combina-tion of the lever T2, and adjusting screws ab, with the slide M, substantially as' and for the purpose described.

4. I claim the employment of the yielding cam U, in combination with the hammer K, substantially as described.

5. I claim the employment of the lifter Q forlifting the hammer K while it is pushing the nut oil' from the die O, substantially as described.

- 6. I claim the combination of the anvil-block J, with the hammers K K K", punch X, and die O, substantially as and for the purpose described.

' GEORGE DUNHAM. [1.. s] Witnesses: i l

E. W. BLISS,

JEREMY W. BLISS. 

